Is my guitar screwed?

I have a Jackson RR24 and its about 3 yrs old. I've never dropped it or played it hard or done anything bad to it. I've had it set up 2 times by someone who is "professional".

A buddy of mine who just got back from music school in LA told me to check this one guy out who makes guitars and has been fixing them for a long time. And this guy is the one who does all his mods to his guitars so my buddy has a lot of faith in him. So I figured I'd take my guitar to him since I was having a few issues with it and I needed a set up done anyways.

The problems I'm having with it is the input jack is making a little bit of noise so its prly just some bad wiring going on, easy fix.

Next, my G string is making a weird noise whenever I play it, like a weird worbling sound. Hard to describe, really noticeable when i play natural harmonics. This problem started around when I got the guitar back for the first time from the guy who set up my guitar.

So now the new guy who's setting up my guitar is letting me know whats going on with the set up and how its going through telephone and emails.

Today I get an email from him telling me that the weird sounding G string is because the truss rod is broken or the truss rod fittings are loose. He says its unlikely the truss rod is broken cause the fretboard is still straight.